#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <time.h>

char c;
unsigned int x,y,tusz,tlo;
time_t t;

void main(void) {
textbackground(BLACK);
clrscr();

while ((c=getch())!=27) {

 srand((unsigned) time(&t));
 x=rand()%81;
 srand((unsigned) time(&t));
 y=rand()%26;
 srand((unsigned) time(&t));
 tusz=rand()%16;
 srand((unsigned) time(&t)+2);
 tlo=rand()%16;

 gotoxy(x,y);
 textcolor(tusz);
 textbackground(tlo);
 putch(c);
 }
clrscr();
}